13297890252 has 18 divisors (see below), whose sum is σ = 31029342708. Its totient is φ = 4432496928.

The previous prime is 13297890239. The next prime is 13297890253. The reversal of 13297890252 is 25209879231.

It is not an unprimeable number, because it can be changed into a prime (13297890253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 382824 + ... + 416112.

Almost surely, 2^13297890252 is an apocalyptic number.

13297890252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13297890252 is an abundant number, since it is smaller than the sum of its proper divisors (17731452456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13297890252 is an frugal number, since it uses more digits than its factorization.

13297890252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66585 (or 33294 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

Multiplying 13297890252 by its sum of digits (48), we get a square (638298732096 = 798936²).

The spelling of 13297890252 in words is "thirteen billion, two hundred ninety-seven million, eight hundred ninety thousand, two hundred fifty-two".